public OrderOperationGraph() : base()
        {
            // Don't try to remove subgraphs that rootType != customerOrderPart,
            // it's nearly impossible to correctly identify those (with performance in mind)

            // CreateGraph(dbTransactionData, aggregator);
            DemandToProviderGraph demandToProviderGraph = CreateGraph3();

            _nodes = demandToProviderGraph.GetNodes();

            if (IsEmpty())
            {
                return;
            }
        }